4/30/2023 0 Comments Flagstaff observatory![]() "Lowell Observatory, Flagstaff, Arizona 86001. ^ "Our History: Discovering Pluto | About Us | Lowell Observatory"."The Navy Prototype Optical Interferometer". ^ "NOI Telescope | Telescopes | Research | Lowell Observatory".^ "31-inch NURO Telescope | Telescopes | Research | Lowell Observatory".Geological Survey, Branch of Astrogeology-A Chronology of Activities from Conception through the End of Project Apollo (1960–1973)" (PDF). ^ "42-inch Hall Telescope | Telescopes | Research | Lowell Observatory".Bulletin of the American Astronomical Society. "A Short History of Perkins Observatory". ^ a b "History of Perkins Observatory".^ "72-inch Perkins | Telescopes | Research | Lowell Observatory".United States Naval Observatory Flagstaff Station.In 1971, it was moved a new building at Anderson Mesa, and returned to Mars Hill in 1992. In 1930 it was used by Clyde Tombaugh to discover Pluto. Lowell Astrograph, also known as the Pluto Discovery Telescope and informally as the Pluto Camera, is an astrograph built by Alvan Clark & Sons in 1929. Use of the telescope ended along with the LONEOS project in 2008. ![]() Starting in 1992 it was refurbished, and saw first light in the dome that previously held the Lowell Astrograph in 1997. in 1939, given to Perkins Observatory in the 1950s, and purchased by Lowell in 1990.
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